SANHE EOC21 DC High Voltage 12V 220V Stepdown PCB Mount Transfomer

Short Description:

Model NO. :SANHE-EOC21

SANHE-EOC21 is a switching power transformer used in range hoods. This product adopts vertical EOD21 structure and works in flyback mode. SANHE-22-108 with its own shielding winding has improved the ability for anti-electromagnetic interference. There is design for sufficient insulation. Apart from reinforced insulation between the primary and secondary windings, additional insulation measures are also taken between the secondary windings to avoid flashover and other problems.

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Introduction

SANHE-EOC21 transformer mainly supplies power for the power control part of the range hood. By converting the 220V mains into required DC voltage, the transformer can provide three sets of working voltages at the same time to realize basic control functions of fan drive, lighting, air volume adjustment, etc.

Parameters

Voltage & Current Load
Output	Vout1	Vout2	ND
Type（V）	5V	12V	15~24V

Electrical Characteristic

NO.	ITEMS	TEST PIN	SPECIFICATION	TEST CONDITIONS
1	Inductance	3-1	683uH±10%	100KHz 1Vrms
2	Leakage Inductance	3-1	50uH MAX	100KHz 1Vrms
3	DCR	3-1	700mΩ MAX	AT 25℃
4	HI-POT	Pri-Sec	NO SHORT BREAK	AC3KV/5mA/60s
		Pri-Core		AC1KV/5mA/60s
		Sec-Core		AC1KV/5mA/60s
5	Insulation resistance	Pri-Sec	≥100MΩ	DC 500V
5	Insulation resistance	Coil-Core	≥100MΩ	DC 500V

Dimensions:（Unit: mm）& Diagram

Features

1. EOC21 vertical structure enhances capability of DC superposition
2. Self-contained shield windings
3. Three layers of insulated wire as margin tape improves insulation.
4. Extra insulation are added to the secondary side. More than 1KV resistance can be withstood between the secondary windings
5. Primary winding and auxiliary winding in the whole layer improves the coupling

Advantages

1. EOC structure magnetic core with larger Ae value ensures good characteristics in DC superposition
2. The use of the internal grounding shield winding ensures a good electromagnetic compatibility
3. There are insulation between the primary and secondary and among the secondary, which further improves product safety
4. Stable voltage on account of primary winding and auxiliary winding